GPT-5.4 (Non-reasoning)

FrontierClosed weightsTextDirect answers

GPT-5.4 family model by OpenAI — non-reasoning.

About the GPT-5.4 family

A late-2025/2026 GPT-5-series flagship iteration with selectable reasoning effort.

All GPT-5.4 models

How this one is configured

This configuration runs in non-reasoning mode (direct answers, faster and cheaper).

Who makes it

OpenAIUnited StatesMaker of ChatGPT and the GPT and o-series model families.

More from GPT-5.4

GPT-5.4

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